Power-brake.



No. 843,625. PATENTED PBB.-12, 1907. L. PFINGST.

POWER BRAKE. APIfLIoATIoN FILED Nov.19.'19o&.

2 SHEETS-SHEET l.

PATENTED FEB. 12, 1907.

L. P FINGST.. POWER BRAKE.

APPLICATION FILED Nov.19, 1904.

.w H\ 4 I w LOUIS PFINGST, OF BOSTON, MASSACHUSETTS, ASSTQGrlilOif, BY-SNF- SIGNMENTS, TO PFINGST ELECTRIC MANUFACTURING CO, OF KITTERY', MAINE, ACORPORATION OF MATNE.

POWERNBRAKE.

Speccation of Letters Eatent.

Patented Feb. 12, 1.907.

Application led November 19, 1904. Serial lio. 233,469.

To a/ZZ whom it may concern,.-

Be it known that '1, LOUIS PFINGST, of (Dorchester) Boston, in the county of Suffolk and State oflMassachusetts, have invented certain new and useful Improvements in Power-Brakes, of which the following is a specification. Y

My invention relates to improved powerbrakes, and the object is to rotate a brakeand location'of the power-driven brake-,spindle and brake-rigging. Fig. 2 is a side elevation of same, showing the location of the power-driven brake-spindle and brake-rigging. Fig. 3 is a sectionalview With parts in fuil lines of one of the solenoids which apply or release the brakes. Fig. 4 is a top plan view of one of the solenoids. Fig. 5 is a detail view,partly in section, of abrake-spindle and coperating parts. Fig. 6 is a detail view, partly in section, of the brake-handle and the upper end of the brake-spindle.,A Fig. 7 is a cross-sectional view through one of the solenoids on the line X X, Fig. 3, looking in the directin of the arrow. Fig..8 is a top plan view of the upper ratchet member) Like letters of reference refer to like parts throughout the several views.

As shown in Figs. ,1 and 2, the construction of the platform nd car-bottom frame: consists of' buffer-timbers a, with a platformfiooring b.

c c c c are the supporting-timbers fastened to the body of the car and supporting the flooring b and buffer-timber a.

dis the end sill which is fastened to the eX- treme end of the side sill e.'

7 are the bottom frame. cross-timbers which are fastened to the side sill e to support the flooring.

To the end sill d and side sill e the end I frame and side frame of the car are secured in the usual manner of car-building.

g is the main brake-rod, and at one end of said rod is connected the brake-chain L', and

the 'other end is pivotally connected to the center brake-lever 7n The main or center brake-lever h is supported by the bracket i, secured to the bottom of the oar, and-has a' loose-motion slot j, the said brake-lever h being held in place by-thepin k. Pivotaliy connected to the main brake-lever h is the secondary brake-rod l, pivoted at its opposite end to the truck brake-lever m, which is pivoted on the brake-beam p. At the lower end of the brake-lever m is pivotally connected the brake-roda, which atits opposite end i Y connected to the truck-adjusted arm n. Oi the ends ofthe brake-beams p are fastened the brake-shoes g, which come in i contact With the periphery of thewheels r, mounted on the axles s.

Thebrake-rod gy and the secondary rod Z. (shown on the right of Figs. l and 2) extend forward and are connected to similar mechanism at the right-hand end of the car. The operation of this mechanism is as follows: Byrotating the spindle L as hereinafter described and winding up the chain L the brake-rod g Will be pulled forward, thereby actuating the brake-lever h. This will pull in the opposite direction the secondary rods l, and by this operation the secondary rods will pull the truck-levers fm toward the cen- V`ter of the car, pressing out the bottom. en d of the levers m toward the end of the car, causing the brake-beams p to travel in the op osite direction, and thereby apply the bra eshoes to the Wheels..- Secured underneath the side sill e by suitable bolts, Fig. 1, are two solenoids A A', which are identical in construction, so that a description of the solenoid A will apply to both. This solenoid A consists of a suitable 'exterior casing'inclosing.

coiled Wire B is the tube C, in which isadapted to travel the solenoid-core D. Each end of the solenoid consists of a suitable end plate G2, against Whiclirests one end of the coiled vthe coiled Wire B, and surrounded by the Y nog sprocket-pulley fast on the brake-spindle L, as shown in li'ig. 5, and its opposite-end is secured to the eyebolt II,` secured to the core D of the solenoid A. The operation of the solenoid in the application of the brakes vwill be hereinafter described.

Fast on the spindle L is the usual ratchwl`.eel-A2, with which. coperatesthe. pawl A3 for. holding the brakes when taken up and to release same when the car starts.

y .per end of the spindle L is secured fast th' i' ratchet member M', with which engages another ratchet member M?, both inclosed in the v chamber M5 of the brake-handle M. Thisl P25. -""f.;rat`chet member M- by the pressure of the ratchet member M2 is in engagement with the i "-fspring M3, one end of which bears down on the member M2 andthe other end against the collar h 4. This spring allows avertical move-` ment of the member nl?. A suitable reinovable pin M `is located freely in the groove in mernb'nf,.M2 by the pressure ol the spring N3,

and vertical slot allows the member hl2 tovertically reciprocate when the pin N is in engagementwith said slot, so that the member M2 can vertically reciprocate with the pin AN in and out. l

draw the pin N out from one ot' the slots N,

l/Vith the lever N raised to the spindle L and its members M M2 will freely revolve. Wh en the pin N is in one 'of lthe slots N4, the handle may be rotated or reciprocated by the operator to apply the brakes whether the solenoids are used or not. When the solenoids are used either to apply or release the brakes, the pin N isWithdraWn by raising the lever N', when the spindle will rotate freely without disturbing the brakehandle M. With the parts in theposition shown in Fig.- 1 the brakesare off, and to apply the brakes vthe circuit isclosed through the Wires L-coiled wires B, and out-wire 2, which energizing kof the wires B draws in- Wardly the solenoid-core- D into the tube C, which pulls the belt J, thereby rotating the spindle L, winding up the chain L', and applying the brakes. During this operation the handle M may be rotated either with the i spindle or without it, as the handle, as previously described, is capable of engagement with or disengagement from .the spindle through the ratchet members. To take ofi the brakes, the handle is allowed to rotate in the opposite direction or held by the hand when the upper ratchet member is disengaged from the landl'e;A which permits the brakespindle and ratchet members to rotate in the chamber of the handle M and releases the' brakes. During' th is operation the current passes to .tl e solenoid A and draws inwardly the core D into the solenoid A while the core on a@ ap,

bodying the same, what I claim as new, and

desire to secure by Letters Patent vot' the United States, is

1. In an apparatus of the character described, a chain-winding brake-spindle, a so-l lenoid for operating sain spindle to apply the brakes, and a handle capable of engagement with or disengagement from said spinale.

2A. In an apparatus of the character described, a chain-winding brake-spindle, a solenoid tor operating said spinale to apply the brakes, and a ratchet-handle capable of engagement with or disengagement from said spindle.

3. In an apparatus of the character described, achain-winding brake-spindle, a solenoid for operating said spinale to apply the brakes, anu another solenoid for operating said spindle to release the brakes. 4. ln an apparatus of the .character described, a chain-Winding brake-spinale, a so- A lenoid for operating saidspincle to apply the brakes, another solenoid for operating-said `spinale to release `the brakes, and a ham-.le

capable of engagement with or disengagement from said spindle.

5. In an' apparatus of the character described, a chain-winding brake-spindle, a solenoid for operating said spindle to apply the brakes, another solenoid for operating the spindle to release thebrakes, and a ratchethandle capable of engagement with or disengagement from said spindle.

6. In an apparatus of thecliaracter described, a chain-winding brake-spindle operated by a solenoid for applying the brakes and provided with han-fwpoWer mechanism independent of said solenoid for operating said spindle.

7. ln an apparatus of the character described, a chain-winding brake-spindle operated by solenoids for applying and releasing the brakes and provided with hand-power mechanism independent of'said solenoids fory operating said spindle.

8. In an apparatus of the character describerl, a chain-winding brake-spindle in combination with a solenoid and hand-power ICO mechanism to simultaneously or independi ently wind up the brake-chain to apply the brakes.

9. In an apparatus of the lcharacter d escribe'l, a chain-winding brake-spindle in combination with sole'noids and hand-power mechanism to simultaneously cr independ- 10. In an apparatus of the character described, a cham-winding brake-spindle, a solenoid for operating said spindle to apply the brakes, a brake-handle capable of engagement with or disengagementfrom said spingagement of said handle and spinale.

1.1. In an apparatus of the character described, a chain-winding brake-spindle, a s0- lenoid for operating said spindle to apply thel brakes, a brake-handle capable of engagement with or disengagement from said spindle, and yielding means for normally causing 'the engagement of said handle and spindle.

12. ln an apparatus of the character described, a chain-winding brake-spindle, a solenoid for operating said spindle to apply the brakes, and a brake-handle capable ofengagement with or disengagement from said spindle and provided with a chamber in lenoid for operating said spindle to apply the brakes, a sprocket-wheel fast oiisaid spindle, and a sprocket-chain for communicating motion from said solenoid to said sprocket-wheel and brake-spindle.

l5. In an apparatus ot the character de' i' scribed, a chain-winding brake-spindle, a sodle, and means for normally causing the enlenoid for operating said spindle to apply the brakes, a solenoid for operating said spindle i i i i l i i i i l l i l i l i which said spindle is free to rotate when the i handle is disengaged from the spindle.

13. In an apparatus of the character described, a chain-winding brake-spindle, a solenoid for operating said spindle to apply the brakes, a solenoid for operating the spindle to release the brakes, and a brake-hanele ca- )able of engagement with or disengagement om said spinale and provided with a chami,

ber in which said spindle is free to rotate when the handle is disengaged from the spindie.

l i l 14. In an apparatus of the character described, a chain-winding brake-spindle, a sol to release the brakes, a sprocket-wheel fast on said spindle, and a sprocket-chain for communicating motion from said solenoids to said sprocket-wheel and brake-spindle.

16. In an apparatus of the character described, a chain-winding brake-spindle, a magnetic device independent of said spindle, and yielding means interposed between said spinale and said magnetic device for rotating said spindle to operate said brake mechanism.

17. .In an apparatus of the character described, a chain-winding brake-spindle, a magnetic device independent of said spindle,

yielding means interposed between said spine dle and said magnetic device for rotating said spindle to operate said brake mechanisni, and a brake-handle capable of engagement with or disengagement from said spindle.

In testimony whereof I have signed my name to this speciiication, in the presence of two subscribing witnesses, this 7th day of November, A. D. 1904.

i LOUIS PFINGST.

Witnesses:

E. L. HARLOW, A. L. MESSER. 

